I was skeptic of buying a t.mix mixer, but it was the only option in this price range that I felt suited my needs.
Upon receiving the mixer and started using it, I quickly found out that this is a very well built and competent mixer for my home studio. The sliders feel great, the EQ is better than I thought and it simply does what it states it does very well.
I would've liked a mid EQ for the stereo inputs as well, but generally the highs and lows works very well and any additional EQing can be done in my DAW as well.
I have not used the USB interface, but I'm confident there's no reason for worry about its quality.